Linked Open Data

Presented for the Penn Humanities Forumby Corey A Harper2013-04-11

Tools and techniques for puttingMetadata, Context, & Narrative

On the Web

@chrpr – [S

lideshar e]

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The Web Becomes Semantic

●Originally:● Metadata about “Web” things (documents)

●Eventually:● Metadata about all sorts of things● And about relationships between things

●TBL’s original vision (Weaving the Web – 1999)●Then: Focus on Machine Reasoning

● Scientific American Article●Now: Focus on things & links

● Reasoning & Inferencing less central

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Semantic Web Terminology

●Resource: Any “thing”●Class: Abstraction of a type of thing●Individual: An instance of a class●Property: An attribute of an individual●Statement/Triple:

● A Resource (subject)● A Property (predicate / verb)● A Value (object) - Nodes

●Graph: Visual Representation of statements●Ontology/Vocabulary: A domain specific collection of classes and properties

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Linked Open Data

●Use URIs as names for things ●Use HTTP URIs so that people can look up those names. ●When someone looks up a URI, provide useful information. ●Include links to other URIs. so that they can discover more things. http://www.w3.org/DesignIssues/LinkedData.html

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Linked Data

●Metadata as a Graph●Typed “things”, named by URIs●The relationships between those things, also built on URIs●Ease of integration *across* data sources – “merging graphs”

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Publish Publish Publish!

http://www.ted.com/talks/tim_berners_lee_on_the_next_web.html

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DBpedia

Structured Wikipedia Data●Partial basis in data entry conventions●InfoBox’s, and InfoBox Templates●Metadata Entry Format●Partial source of Ontology

● Class Structure● Vocabulary Design

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DBpedia

●3.4 Million “things” described●Ontology based on “infoboxes”

● 1.5 million things classified● http://wiki.dbpedia.org/Ontology

●Approx. 50,000 “Properties”● Approx. 1,200 defined in ontology

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2014-04-11 Harper - Penn Humanities Forum - LODLAM 14http://thinkbase.cs.auckland.ac.nz/start.jsp

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Google Knowledge Graph

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RelFinder

http://www.visualdataweb.org/relfinder.php

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RelFinder

http://www.visualdataweb.org/relfinder.php

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Linked Jazz

http://linkedjazz.org/network/

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Social Networks of Archival Context

Image From: http://inkdroid.org/journal/2010/08/12/archival-context-on-the-web/

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Linking Lives – Screenshots from P. Johnston

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Linking Lives – Screenshots from P. Johnston

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http://viewshare.org/

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DM2E

http://dm2e.eu/

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PunditIm

age from: http://sum

mit2013.lo dlam

.net/ 2013/04/0 3/pundit/

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Annotations

●The Pundit (thepund.it)●Hypothesis: Peer Review for the Web (hypthos.is)●Open Annotation Collaboration●Distributed bibliographic control environment

● Focus on identification over description

“In short, by treating values as non-literal resources and assigning URIs to them we give ourselves (and others) the hooks on which to hang further descriptions.” - Andy Powell

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Context

Narrative

Story telling

The Library's story,

and the Archives story,

but also…

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Users’ stories

Scholars' stories

Adding context through recombinant metadata

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Scholars & Users Stories – Tim Sherratt (@wragge)

Also: http://discontents.com.au/a-map-and-some-pins-open-data-and-unlimited-horizons/

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Linked Data Based UI DesignFor Boutique Collections

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FuzzyWuzzy & SeatGeek!F

uzzy Wuzzy – A

weso m

e Lib rary fro m S

ea tGeek

https://gi thub.com/seatge ek/fuzz yw

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-pyth

on

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Slide courtesy of Doug OardUniversity of Maryland

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Reconciliation & NERhttp://freeyourm

etad

ata.org/

Watch for their book http://www.amazon.com/Linked-Data-Libraries-Archives-Museums/dp/1856049647/

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Open Refine RDF Skeleton

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And onward...

• Rethinking UI Design Aggregate data from more sources Provide more context

• Building proofs of concept

• Improving Search Engine Optimization (JSON-LD, Schema.org, RDFa, &c.)

• Use cases!

• Experimentation!

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Thanks!

corey.harper@nyu.edu

212.998.2479

@chrpr